/*
 * PosChangeListener.h
 *
 *  Created on: 2012-9-14
 *      Author: yangentao@gmail.com
 */

#ifndef POSCHANGELISTENER_H_
#define POSCHANGELISTENER_H_

class PosListener {
public:
	PosListener();
	virtual ~PosListener();
public:
	void onPosChanging(int from, int to, int delta);
	void onPosChanged(int from, int to, int delta);

	void onPosRemoving(int from, int to);
	void onPosRemoved(int from, int to);

};

#endif /* POSCHANGELISTENER_H_ */
